Power distribution network operation risk assessment method based on scene analysis

A technology of operation risk and distribution network, applied in the field of power system, which can solve problems such as fixation
CN110599006AActive Publication Date: 2019-12-20NANJING UNIV OF SCI & TECH
3 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2019-12-20

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a power distribution network operation risk assessment method based on scene analysis, and the method comprises the steps: sampling wind power, photovoltaic output and load, andobtaining a time sequence scene library; performing probabilistic load flow calculation under each moment scene to obtain probability distribution of voltage and load flow; evaluating a node voltageout-of-limit risk and a line power flow out-of-limit risk; and performing statistics on risk conditions at each moment to obtain time sequence risk distribution. According to the method, the uncertainty of wind power and photovoltaic output and the fluctuation of the load are considered, the time sequence risk of operation of the power distribution network is accurately evaluated, the result can better reflect the actual situation, and a basis can be provided for risk prevention and control of the power distribution network containing wind-solar energy.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The power system technology of the present invention specifically relates to a method for evaluating the risk of distribution network operation based on scenario analysis. Background technique

[0002] In recent years, the problems of environmental pollution and energy shortage have become increasingly severe, and renewable energy represented by wind power and photovoltaics has been widely used. However, with the large-scale grid-connection of wind and wind energy, the topological structure and power flow distribution of the distribution network have become more complex, and the output of wind and wind has obvious intermittent and fluctuations, which has brought great challenges to the operation of the distribution network. uncertainty. Studying the operation risk of distribution network with large-scale wind and solar power access can provide a basis for risk control, avoid wind and solar abandonment, load shedding and other situations, and ensure th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More